Exercise attachment for a barbell



FIG. 1 is a perspective view of an exercise attachment for a barbell, showing my new design in a closed position;

FIG. 2 is an enlarged perspective view thereof, illustrated in an open position;

FIG. 3 is an enlarged front elevational view thereof, illustrated in the closed position;

FIG. 4 is a rear elevational view of FIG. 3;

FIG. 5 is a left-side elevational view of FIG. 3, the right-side elevational view being a mirror image thereof;

FIG. 6 is a top plan view of FIG. 3; and,

FIG. 7 is a bottom plan view of FIG. 3.

The evenly spaced broken lines depict environmental structure that forms no part of the claimed design. 

CLAIM The ornamental design for an exercise attachment for a barbell. 